X s shock-ab sorbeb



-J. J. RHINE.

SHOCK ABSORBER.

APPLICATION man SEPT-H. 1911 RENEWED APR. 5.1919.

Patented May 13, 1919.

uuuuuuu xh L d Fm Ll 9 till JOHN J. RHINE, 023' PITTSBURGH, PENNSYLVANIA.

Application filed lleptcmher it, 1917, tieria'l No. 190,865.

To all whom "it may concern:

Be it known that l, JOHN J. Burns, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and Eitate of Pennsylvania, have invented new and useful improvements in Shoclnhbsor ers of which the following is a specification.

This invention relates to a shock absorber so constructed as to'be capable of supporting a pneumatic reciprocating tool and absorb the shock and vibration created by tools of this character.

An object of the invention is to simplify the construction of a device of this character without sacrificing the efiiciency thereof and the durability of the parts.

Besides the above my invention is distinguished in the novel manner of supporting the sleeve on the pipe and allowing adjustment of the tension of the springs.

"With these and other objects in view the invention will be better understood from the following detailed description. taken in connection with the accompanying drawing wherein Figure 1 is a side elevation of a tool showing my invention applied thereto.

Fig. 2 is a longitudinalsectional view. Figs. 3 and l are cross sectional views. Fig. 5 is a diagrannnatic view showing one form of pneumatic tool in operation.

' Again referring to the drawing the letter it designates any suitable form of pneuinatic tool, and the letter B, the air or fluid conduit. A pipe 1; one element of my invention directly connects the conduit to the tool A, thus accomplishing rigid connection between the tool and conduit. At an intermediate point this pipe has formed thereto in any suitable manner a collar or abutment 2 that is slidably received within a sleeve 3. This sleeve is of a cylindrical outline with both ends threaded as shown at 4 and 5, to receive the interior threads of caps 6 and 7. These caps are identical in construction with the exception that the cap 7 is provided with an extension 8 through which passes a screw 9, the flattened end of which lies upon the flattened. space lll coniposing a part of the exterior surface of the Specification of Ztetters Patent.

Patented ltllay lid, w th.

Renewed llpril 5, 1919. Serial Ito. itlit",9$tti.

pipe. From this arrangement it will. be seen that the tube is free to slide longitudinal of the pipe but held against rotation upon the pipe. Arranged within the sleeve and engaging the abutment on the tube, are springs 11, which also press against the caps 6 and 7. Upon adjustment of the caps upon the sleeve, the tension of the springs can be regulated. For the purpose of preventing subsequent movements of the caps after the adjustment each cap has threaded therein a screw 12 that binds against the adjacent end of the sleeve.

if found advantageous in practice the sleeve may be provided with cars 13, to which may be pivotally connected a handle or support 14:, as illustrated in the drawing, the function of which is clearly illustrated in Fig. 5, thus relieving the operator of the tool of a certain amount of stress when the tool is used in mines or similar work where the tool is used in a particular position for a predetermined interval of time.

In the use of the invention the sleeve 3 is gripped by the operator thereby upon each reciprocation of the mechanism of the 'tool A the abutment 2 will move back and forth with the vibrations of the casings of the tool A. This vibratory motion is resiliently absorbed by the suitably placed springs 11. As the pipe 1 is rigidly connected to the casing of the tool the pipe 1 will vibrate with the tool and by my improved device these vibrations are materially absorbed before they reach the hands of the operator holding the sleeve 3.

It is to be understood that the structural embodiment of the invention as a whole and ticulars or in any other, eacept asset forth in the appended claim.

Having described my invention what l claim is:

it shock absorber for a reciprocating pneumatic tool comprising an air conveying l pipe connected directly to the tool and having an abutment formed thereon, a sleeve in which said abutment and major portion of said pipe is slidably mounted, springs encircling the pipe and engaging the abutment, caps threaded on the ends of the sleeve and engaging the spring for regulating the tension thereof and to slidably support said pipe and screws mounted in the caps and adapted to engage the sleeve for holding the 10 caps in an adjusted position.

In testimony whereof I affix my signature.

JOHN J. RHINE. 

